54.4. Material Properties

The concrete is modeled via the coupled damage-plasticity microplane model:

Material Parameters for Concrete
Young’s modulus MPa20000
Poisson’s ratio -0.2
Uniaxial compressive strength MPa31.6
Biaxial compressive strength MPa36.34
Uniaxial tensile strength MPa3
Tension cap hardeningfactor -1
Hardening parameter MPa24E4
Compression cap location MPa-35
Compression cap shape -2
Threshold for tension damage -0
Threshold for compression damage -2E-5
Tension damage parameter -3000
Compression damage parameter -2000
Nonlocal interaction range parameter mm21600
Over nonlocal parameter -2.5

The parameters are input as follows:

MP, EX, 1,
MP, NUXY, 1,
TB, MPLA, 1, , , DPC
TBDATA,1,, , , , ,
TBDATA,7, , , , ,
TB, MPLA, 1, , , NLOCAL
TBDATA, 1, ,

The rebar steel is modeled using von Mises plasticity with linear hardening (BISO material model) and the following parameters:

Material Parameters for Rebar Steel
Young’s modulusMPa1.9E5
Poisson’s ratio-0.3
Yield stressMPa470
Tangent modulusMPa1000